871390220 has 24 divisors (see below), whose sum is σ = 1874553408. Its totient is φ = 340054400.

The previous prime is 871390211. The next prime is 871390229. The reversal of 871390220 is 22093178.

It is an interprime number because it is at equal distance from previous prime (871390211) and next prime (871390229).

It is not an unprimeable number, because it can be changed into a prime (871390229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530516 + ... + 532155.

It is an arithmetic number, because the mean of its divisors is an integer number (78106392).

Almost surely, 2^871390220 is an apocalyptic number.

It is an amenable number.

871390220 is an abundant number, since it is smaller than the sum of its proper divisors (1003163188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

871390220 is a wasteful number, since it uses less digits than its factorization.

871390220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062721 (or 1062719 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 871390220 is about 29519.3194365995. The cubic root of 871390220 is about 955.1484907486.

The spelling of 871390220 in words is "eight hundred seventy-one million, three hundred ninety thousand, two hundred twenty".